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water flow control system Applications

  • Trapped Key Interlocks for Flow Control

    KIRK Eagle Series valve interlock systems can be implemented within many industries in which managing the flow of materials and products is critical.  Valve interlocks can aid in minimizing loss of product, preventing materials from mixing that may cause hazardous results,  and promoting flow control process safety that protects your personnel and equipment. The specific flow control applications below can be designed to meet the unique needs of every customer and can be added to an existing KIRK trapped key interlock system.

    By Kirk Key Interlock Company based in North Canton, OHIO (USA).

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    Real-time Control System for Wastewater Treatment Plants

    Wastewater treatment plants (WWTP) are subject to large variation in flow and load, not to speak of uncertainties on the composition of the incoming wastewater. On top of that, the activated sludge treatment process, as used by the vast majority of treatment plants, is difficult to control due to the complex behaviour of the biological process. Nevertheless WWTPs are run 24/7, with operators and management challenged to meet ever tightening environmental regulations.

    In order to meet the operational demands of modern-day plants, a new control system was developed. Proprietary control algorithms were introduced based on a large set of data from nutrient measurements in various WWTPs. The customer`s benefits are twofold: (1) achieving optimum effuent quality and, at th same time, (2) lowering energy needs and dosing of commidity chemicals.

    By AppliTek NV based in Nazareth, BELGIUM.

  • Force Main Systems Sulfide Odor Control with Hydrogen Peroxide

    Force main systems are typically high sulfide odor generators due to septicity conditions related to full pipe flow and a greater anaerobic slime layer (biofilm) thickness. Primary factors that influence sulfide loading generation in a force main include sewage temperature, BOD, retention time, pipe size and flow. Gaseous hydrogen sulfide (H2S) release at the force main discharge is usually the main concern related to odor and corrosion control needs; however, corrosion problems within the pipe can be of a concern (e.g. "crown cutting") at locations where air pockets can lead to concentrated H2S gas build up. Some basic considerations for assessing an appropriate sulfide odor treatment method for force main systems include: Retention time / duration of control Pump station type / cycling (e.g. vfd; start/stop, etc). Force main injection tap points, if any (e.g. air relief valves) Existence of intermediate re-lift stations or in series pump stations Manifold force main systems

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

  • Constant pressure pump control for variable demand irrigation

    Mist, Drip, Spray, or Big Guns, the Cycle Stop Valve (CSV) turns any Submersible, Turbine, or Centrifugal pump into a variable flow, constant pressure system. The CSV maintains a constant pressure on the irrigation system throughout a wide range of flow. Eliminating line breaks and leaks, while precisely applying an exact amount of water, the CSV can conserve water as well as energy.

    By Cycle Stop Valves, Inc. based in Lubbock, TEXAS (USA).

  • Gravity Main Sulfide Odor Control with Hydrogen Peroxide

    Gravity main sewer systems include major trunk lines and the tributaries that feed them. Hydrogen sulfide (H2S) odor builds up in the collections system as the flows collect from upstream reaches and become larger, deeper and more septic (oxygen depleted) in the downstream reaches more near to the wastewater treatment plant. In general, most of the more significant hydrogen sulfide odor and corrosion control problems occur in the major trunk systems segments conveying flow to the plant. Therefore, selection of sulfide treatment for gravity systems has several options depending mainly on: Duration of control required Degree of septicity (oxygen depletion) Location of target control points or "hot spots" Location of available dosing points upstream of "hot spots" Availability of civil infrastructure and utilities Sensitivity to hazardous chemicals

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

  • Constant Pressure pump control valves

    For use with water well pumps and booster pumps, the Cycle Stop Valve (CSV) turns any pump into a variable flow, constant pressure system. Working in conjunction with a small pressure tank, the CSV is usually adjusted to the middle of the pressure switch range. IE; 40/60 PSI switch, 50 PSI CSV. The size of the pressure tank determines how much water can be used by the house, before the pressure drops to 40 PSI, and the pressure switch starts the pump. As long as flow rates in and around the house vary from 1 GPM to as much as the pump can produce, the CSV maintains a constant 50 PSI on the system. When there is no more flow required for the house, the CSV allows the little pressure tank to fill to 60 PSI, and the pump is shut off by the pressure switch.

    By Cycle Stop Valves, Inc. based in Lubbock, TEXAS (USA).

  • Automated solutions for the wastewater treatment pond / lagoon / plant dredging

    LWT’s dredging systems can be used for wastewater treatment plant, pond, lagoon dredging applications. Complete automated remote controlled dredging systems result in increased plant efficiency, and accommodate increased plant flow. One of the keys to successful automated controls is the ability of the dredge system to feed a constant percentage of solids to the pressing plant, using in-line density and flow meters to allow the operators to dial in the desired rate of solids.

    By Liquid Waste Technology LLC (LWT LLC) based in New Richmond, WISCONSIN (USA).

  • EPR waste minimisation monitoring for wastewater treatment industry

    The EPR regulations have replaced the IPPC regulations and are effective from May 2009 for qualifying companies within the industrial sector and October 2009 within the water sector. They will progressively require industry to minimise waste, reduce product loss and implement improved process control. The legislation will require the operator to self monitor processes and discharges, to demonstrate effective control with particular emphasis on EPR compliance and prevention. The regulating Agency will operate a point scoring system to assess operators under the OMA-3 program and this will be used to identify how well a company is managing their processes and possibly identify areas for improvement. The Environmental Permitting Regulations require industry to install instrumentation (MCERTS approved where available) to report water quality. EPR compliance monitoring may include automatic water sampling, flow measurement, pH, turbidity and TOC water analysis. Industry will need to identify point of source emissions, take steps to correct inefficient control and alarm unacceptable process deviations. Although the legislation focuses on environmental improvement, good housing keeping also makes a lot of sense. Optimisation of process control minimises waste, reduces treatment costs and ultimately saves money.

    By Pollution & Process Monitoring Ltd based in Sevenoaks, UNITED KINGDOM.

  • OneRainware™ - Radar rainfall for real-time and analytical applications.

    Accurate estimation of the spatial distribution of rainfall is critical to successfully model hydrologic processes. OneRain has worked with engineering firms and those with responsibilities in Stormwater and Wastewater Management across the U.S. to provide radar rainfall data to help characterize storm events or flow problems in collection systems and as a basis for both real-time and design-oriented modeling. OneRainware products and services offer: *Real-time gauge-adjusted radar rainfall (GARR) data *Real-time area-average rainfall *Real-time forecast rainfall *End-of-month archive quality gauge-adjusted radar rainfall data *Historical and post-event analysis using archived rainfall estimates *Web-delivered calibrated radar-rainfall data *StormProperties™ Analysis. GARR data are used in flood warning, runoff modeling, basin modeling, I/I studies, litigation, real-time control, design storms, and National Pollutant Discharge Elimination System (NPDES) compliance activities.

    By OneRain Incorporated based in Longmont, COLORADO (USA).

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